JP2010018218A - Electric railway wire suspension device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suspension device with high visibility capable of also detecting/informing abnormality which cannot be visually confirmed like a case when an excessive load is applied. <P>SOLUTION: The suspension device 1 is provided with: a main line 3 having a disconnection point arranged between a suspension wire and a trolley wire and having a non-conductive part on the midway; a conductive sub-line 7 advancing in parallel to the main line 3 and electrically insulated from the main line 3 at a usual time; and a conductive light emission line 9 advancing in parallel to the main line 3 in which a light emission part 10 and a power source 11 are connected in series. When abnormally large tension is applied to the main line 3, the main line 3 is broken at the disconnection point, a circuit including a conductive upper member 4 of the main line, the sub-line 7, a conductive lower member 6 of the main line and the light emission line 9 is formed, and the light emission part 10 is light-emitted. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a suspension device (hanger, dropper) for suspending a trolley line or an auxiliary suspension line from a suspension line or an auxiliary suspension line. In particular, the present invention relates to a suspension apparatus provided with means for easily visually confirming not only an abnormality in appearance such as dropout or damage but also an abnormality that does not appear in the appearance such as an excessive load.

  Dropping or damage of the suspension device (hangers, droppers) that suspends the trolley line or auxiliary suspension line from the suspension line or auxiliary suspension line is generally found by inspection of maintenance workers or visual observation of the driver. Many. In particular, in the case of visual discovery, it is difficult to confirm only when the suspension device is completely dropped or damaged, and the difference from the normal state clearly appears. For this reason, when the difference from the normal time is not appearing in the appearance such that an excessive load exceeding the allowable value is acting, it is difficult to find it visually.

  The present invention has been made in view of the above-described problems, and has a high visibility and a suspension device capable of detecting and notifying an abnormality that cannot be visually confirmed such that an excessive load is acting. The purpose is to provide.

  The suspension device of the present invention is a suspension device that suspends a trolley wire or an auxiliary suspension wire from a suspension wire or an auxiliary suspension wire, and when an abnormal tension is applied to the suspended trolley wire or the auxiliary suspension wire. A display device that is lit is provided.

When an abnormally large tension is applied to the suspension device, the suspension device is lit and displayed, so that the driver can also clearly confirm the abnormality of the suspension device. Also easy to understand at night.
The case where an abnormally large tension is applied to the suspended line is, for example, a case where one of a number of suspension devices arranged along the trolley line is removed. In the normal state, the load of the suspended wire is distributed and applied to each suspension device. However, when one of the suspension devices is detached, the load of the detached suspension device becomes zero, the load of the suspension device in the vicinity thereof increases, and an abnormally large tension is applied. In other cases, the pantograph passes through an overhead line with poor installation accuracy.

  A specific aspect of the suspension device of the present invention is a suspension device that suspends a trolley wire or an auxiliary suspension wire from a suspension wire or an auxiliary suspension wire, the suspension wire or the auxiliary suspension wire and the trolley wire or the auxiliary suspension wire. Disposed between the overhead line and having a break point, a part of the middle is non-conductive main line, parallel to the main line, and is normally electrically insulated from the main line A conductive sub-line, and a conductive light-emitting line parallel to the main line, in which a light-emitting unit and a power source are connected in series, and when the main line is subjected to an abnormally large tension, A circuit including a conductive portion of the main line, a sub line, and a light emitting line is formed by disconnection, and the light emitting portion emits light.

  According to the present invention, when an abnormally large tension is applied to a suspended wire, the main line supporting the wire is intentionally divided to form an electric circuit including the light emitting portion to cause the light emitting portion to emit light. Thus, the abnormality of the suspension device can be notified.

  In the present invention, the main line is composed of a conductive part, a non-conductive part and a conductive part in order from the top, a flange is formed at the lower end of the upper conductive part, and the sub-line is at the upper end of the main line. A ring-shaped portion that is inserted into the upper conductive portion above the flange of the line in a non-conductive manner, and a lower end is connected to the lower conductive portion of the main line, and when the main line is disconnected, It is preferable that the ring-shaped connecting portion of the line is locked to the flange of the main line.

  If the main line breaks due to an abnormally large tension applied to the suspended line, the ring-shaped connecting part of the sub line contacts the flange of the main line, and the conductive parts above and below the main line are conducted by the sub line. Then, an electric circuit including a light emitting line is formed. In this case, the tension of the suspended line is applied to the upper conductive portion of the main line, the sub line, and the lower conductive portion of the main line.

  In this invention, it is preferable that the inner peripheral surface of the ring-shaped connection part of the said subline is insulative-treated.

  The ring-shaped connecting part of the sub line is inserted in the upper conductive part of the main line so as not to conduct electricity, but by conducting an insulating treatment on the inner peripheral surface of the connecting part, conduction between the two parts in the normal state is achieved. This can be prevented more reliably.

  As can be seen from the above description, according to the present invention, when an abnormally large tension is applied to the suspended line, the main line supporting the line is intentionally divided, and the electric circuit including the light emitting unit is provided. The light emitting part is made to emit light. Thereby, it is possible to clearly confirm the abnormality of the suspension device even to the driver, and it is possible to provide a suspension device that is excellent in visibility of occurrence of abnormality at night.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
First, an arrangement state of overhead wires will be described.
FIG. 3 is a diagram illustrating an example of an arrangement state of overhead wires.
The overhead line is arranged in parallel with the track for the electric vehicle. In the example shown in FIG. 3A, the overhead wire 100 includes a trolley wire 101 that contacts the pantograph, a suspension wire 102 that suspends the trolley wire 101, and a hanger (suspension device) 103. It is several kilometers. Such an overhead wire 100 extends between the support pillars standing at both ends of the overhead wire length section, and in the middle, the overhead wire stands at a predetermined interval (in the example, 30 to 50 m). It is supported by the pillar 111. Near the upper end of the overhead pole 111, a support member 112 extending in the line direction is attached via a lever 113 in the middle. The suspension wire 102 is supported near the tip of the support member 112. The trolley wire 101 is suspended from the suspension wire 102 by a hanger 103 and supported by a brace 114 extending from a support member 112.
As shown in the drawing, between the overhead poles 111, feeders 115, protective wires 116, overhead ground wires 117, and the like are arranged.

In the example shown in FIG. 3B, the auxiliary suspension wire 104 is suspended from the suspension wire 102 by the dropper 105, and the trolley wire 101 is suspended from the auxiliary suspension wire 104 by the hanger 103.
In the following description, the suspension device indicates the hanger 103 or the dropper 105.

FIG. 1 is a diagram for explaining a suspension device (in a normal state) according to an embodiment of the present invention, FIG. 1 (A) is a perspective view, and FIG. 1 (B) is an electric circuit formed in a normal state. FIG.
2A and 2B are diagrams for explaining the suspension device of FIG. 1 when an abnormal tension is applied to the trolley wire. FIG. 2A is a perspective view, and FIG. 2B is formed when an abnormal load is applied. It is a figure explaining an electric circuit. In this example, the hanger 1 that suspends the trolley wire 101 from the suspension wire 102 will be described.
The hanger 1 is disposed between the suspension wire 102 and the trolley wire 101, and the main line 3 to which the tension of the trolley wire 101 is applied, and the auxiliary line 7 and the light emission line 9 parallel to the main line 3, Is provided.

  The main line 3 includes a conductive upper member 4 (for example, made of copper) supported by the suspension wire 102, a non-conductive central member 5 (for example, made of resin) coupled to the lower end of the upper member 4 and the main line 3. It is composed of a conductive lower member 6 (for example, made of copper) that is detachably connected to the central member 5 and grips the trolley wire 101, and is based on a pantograph passage that can be predicted as a load of the trolley wire 101 in a normal state as a whole. Has strength against the sum of fluctuating forces. A hook 4a hooked on the suspension wire 102 is formed at the upper end of the upper member 4, and a flange 4b protruding outward is formed at the lower end. The lower end of the central member 5 is detachably connected to the upper end of the lower member 6. In this example, a pin-like connecting portion 5 a is formed at the lower end of the central member 5, and an insertion hole 6 a into which the pin-like connecting portion 5 a is inserted is formed at the upper end of the lower member 6. The pin-like connecting portion 5a is inserted into the insertion hole 6a, and both are detachably connected with an adhesive or the like. The pin-like connecting portion 5a cannot be reinserted when it is removed from the insertion hole 6a.

The sub line 7 is made of a conductive material (for example, made of copper), and its upper end is supported by the upper member 4 of the main line so as not to conduct electricity. In this example, a ring-shaped portion 8 is formed at the upper end of the sub-line 7, and this ring-shaped portion 8 is inserted into a portion above the flange 4 b of the upper member 4. The inner peripheral surface 8a of the upper end ring-shaped portion 8 is preferably insulative. Thereby, even if the inner peripheral surface 8a of the ring-shaped part 8 contacts the upper member 4, both do not conduct. Further, the inner diameter of the upper end ring portion 8 is smaller than the outer diameter of the flange 4b. The lower end of the sub line 7 is connected to the lower member 6 of the main line.
As will be described later, when the central member 5 and the lower member 6 of the main line 3 are divided, the tension of the trolley wire 101 is also applied to the sub line 7.

Here, the strength of the upper member 4 of the main line is s4, the strength of the central member 5 is s5, the strength of the lower member 6 is s6, the strength of the subline 7 is s7, and the pin-like connecting portion at the lower end of the central member of the main line 3 Assuming that the connection strength between 5a and the insertion hole 6a at the upper end of the lower member is s, the strengths are set to satisfy the following relationship.
s4, s6, s7>s5> s
That is, the strengths s4, s6, and s7 of the upper member 4, the lower member 6, and the auxiliary line 7 are made larger than the strength s5 of the central member 5, and the connection strength s between the central member 5 and the lower member 6 is minimized. . However, the main line 3 as a whole has strength against the load of the trolley wire in the normal state. By setting in this way, when an abnormally large load is applied to the trolley wire, the central member 5 and the lower member 6 are divided.

  The light emitting line 9 is made of a conductive material (for example, made of copper), the upper end is electrically connected to the upper member 4 of the main line, and the lower end is electrically connected to the lower member 6 of the main line. A light emitting unit (such as a lamp) 10 and a power source (such as a solar cell) 11 are connected to the line 9 in series.

  In the normal state shown in FIG. 1A, the load of the trolley wire 101 is applied to the main line 3. And the subline 7 and the upper member 4 of the main line are not conducting. Then, as shown in FIG. 1 (B), in consideration of a circuit composed of the upper member of the main line 4-the sub line 7-the lower member 6 of the main line 6-the light emitting line 9, the sub line 7 and the upper member of the main line are considered. 4 is not conducting, this circuit is opened, and the light emitting portion 10 of the light emitting line 9 does not emit light.

  On the other hand, when a load higher than the connection strength between the pin-like connecting portion 5a of the middle member 5 of the main line and the insertion hole 6a of the lower member 6 is applied to the trolley wire 101, the pin-like connecting portion 5a is inserted into the insertion hole as described above. The main line 3 is cut off from 6a. As shown in FIG. 2A, the lower member 6 holding the trolley wire 101 is drawn downward, and the auxiliary line 7 connected to the lower member 6 is also drawn downward. The ring-shaped upper end 8 contacts the flange 4b of the upper member 4 of the main line. Thereby, the load of the trolley wire 101 is applied to the upper member 4 of the main line, the auxiliary line 7, and the lower member 6 of the main line. Further, the sub line 7 and the upper member 4 of the main line are conducted through the flange 4b, and as shown in FIG. 2B, the upper member of the main line 4-the sub line 7-the lower member 6 of the main line 6-. The circuit consisting of the light emitting line 9 is closed. Thereby, the light emission part 10 of the light emission line 9 light-emits.

  In addition, as shown by an imaginary line in the figure, it is preferable to cover almost the whole of the light emitting line 9 except the light emitting portion 10 with a case 15. In this case, it is possible to prevent the upper member 4 of the main line and the ring-shaped portion 8 of the sub line 7 from being short-circuited by moisture such as rain during normal times.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure explaining the suspension apparatus (at the time of a normal state) which concerns on embodiment of this invention, FIG. 1 (A) is a perspective view, FIG.1 (B) is a figure explaining the electric circuit formed at the time of a normal state. It is. FIG. 2A is a perspective view illustrating the suspension device of FIG. 1 when an abnormal tension is applied to the trolley wire, FIG. 2B is a perspective view, and FIG. It is a figure to do. It is a figure explaining an example of the arrangement | positioning state of an overhead wire.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suspension apparatus 3 Main line 4 Upper member 5 Center member 6 Lower member 7 Sub line 8 Ring-shaped part 9 Light emission line 10 Light emission part 11 Battery 15 Cover 101 Trolley line 102 Suspension line

Claims (4)

A suspension device for suspending a trolley line or an auxiliary suspension line from a suspension line or an auxiliary suspension line,
A suspension device comprising a display device that lights up when an abnormal tension is applied to the suspended trolley wire or auxiliary suspension wire. A suspension device for suspending a trolley line or an auxiliary suspension line from a suspension line or an auxiliary suspension line,
The main suspension line or the auxiliary suspension line and the trolley line or the auxiliary suspension line are disposed between the suspension line or the auxiliary suspension line, have a break point, and a part of the middle is non-conductive,
A conductive sub-line parallel to the main line, which is normally electrically insulated from the main line;
A light emitting section and a power source connected in series, and a conductive light emitting line parallel to the main line,
When an abnormally large tension is applied to the main line, the main line is disconnected at the break point, a circuit including a conductive portion, a sub line, and a light emitting line of the main line is formed, and the light emitting unit emits light. A suspension device. The main line is composed of a conductive part, a non-conductive part and a conductive part in order from the top, and a flange is formed at the lower end of the upper conductive part,
The sub-line has a ring-like portion inserted into the upper conductive portion above the flange of the main line at the upper end so as not to be conductive, and the lower end is connected to the lower conductive portion of the main line,
The suspension device according to claim 2, wherein when the main line is disconnected, the ring-shaped connecting portion of the sub-line is locked to the flange of the main line.   The suspension device according to claim 3, wherein an inner peripheral surface of the ring-shaped connecting portion of the sub line is subjected to an insulating process.

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